Age of initiation and transition times to tobacco dependence: Early onset and rapid escalated use increase risk for dependence severity.
Huggett SB, Keyes M, Iacono WG, McGue M, Corley RP, Hewitt JK, Stallings MC. Age of initiation and transition times to tobacco dependence: Early onset and rapid escalated use increase risk for dependence severity. Drug Alcohol Depend. 2019 09 01; 202:104-110.